in reply to Splitting on Every Second Occurence

I'd use a regex on this one:
my @splitted = $str =~ /([^=]+=[^=]+)=?/g;

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)